Applicating devices

ABSTRACT

A device including an encasement, a dividing plate inside the encasement, a securing bar mounted on the encasement, a drive source secured by the securing bar to the encasement, a gear train supported inside the encasement, a modified rack gear driven linearly through the encasement by the gear train, a storage chamber mounted on the encasement through which the modified rack gear also travels linearly, a disk mounted on the end of the modified rack gear which forces the contents of the storage chamber to expel as the modified rack gear advances through the storage chamber, an automatic stop on the modified rack gear which prevents its advancement after a predetermined distance of travel, a keeper to cause the modified rack gear to resist disengaging from the gear train, but still allow the disengagement and withdrawal of the modified rack gear from any point of its advancement.

D llmted States Patent [151 3,635,378 DeHart Jan. 18, 1972 [54]APPLICATING DEVICES 3,242,881 3/1966 Schafer ..222/390 X Inventor: DamonDena", 6 Veterans Ln. 3,401,847 9/1968 Downing ..222/327 Stoneham Mass02180 Primary Examiner-Robert B. Reeves 22 i N 24, 1969 AssistantExaminer'lhomas E. Kocovsky [21] Appl. No.: 879,333 57 ABSTRACT A deviceincluding an encasement, a dividing plate inside the [52] U.S.Cl..222/333,222/326 encasement, a securing bar mounted on the encasement,a [51] lint. Cl ..Fl6n 3/12 drive source secured by the securing bar tothe encasement, a [58] Field of Search ..222/251, 309, 324, 325, 326,gear train supported'inside the encasement, a modified rack 222/327,333, 386, 390 gear driven linearly through the encasement by the geartrain, a storagechamber mounted on the encasement through which [56]References Cited the modified rack gear also travels linearly, a diskmounted on the end of the modified rack gear which forces the contentsof UNITED TATE PATENT the storage chamber to expel as the modified rackgear advances through the storage chamber, an automatic stop on the1'23; 1 f g modified rack gear which prevents its advancement after a1776659 9 1930 333 X predetermined distance of travel, a keeper to causethe l e on l modified rack gear to resist disengaging from the geartrain, 81 9/1934 f "222/324 X but still allow the disengagement andwithdrawal of the 2550335 4/ 1951 X "222/3 86 X modified rack gear fromany point of its advancement. 2,626,085 1/1953 MacKlnnon "222/333 X 73,208,638 9/1965 Frenzel ..222/327 X 12 Claims, 14 Drawing FiguresAPPLICATING DEVICES This invention relates to the improvement inapplicating devices, and more particularly to applicating devices foruse with cartridgeloading chambers and, also, refillable chambers whichuse detachable portable electric drills or other such small power drivesources which may be detachable. Permanently installed power drivesources could also be adapted to the applicating device. Mostapplicating devices, such as caulking guns, grease gums etc., aremanually operated and tend to fatigue the operator. The application ofsubstances in slow, and the appearance of the resulting bead of thesubstance, which the applicating device produces, is often unattractivebecause of the irregularities produced by the hand operated'applicatingdevice.

The object of this invention is to provide an applicating device whichuses a disposable cartridge or a refillable chamber as a means ofstoring the substance to be applied.

Another object is to use a removable power source such as a portableelectric drill or other such removable power supply; with slightmodifications, a permanent source could be used with the applicatingdevice.

The third objectis to improve the speed at which a substance can beapplied. 1

A fourth object is to improve the physical comfort for the operator ofthis device.

Still another object is to improve the appearance of the resultant beadin cases such as caulking, where appearance is important.

The embodiment of this invention, together with the modifications, areillustrated in the accompanying drawings.

FIG. 1 is a perspective view of one form of the invention, showing achamber for use with cartridges.

FIG. 2 is a plane view of one half of the encasement, showing the insidestructural supports of the gears, and also showing a WOITI'I gear withretainer ring, wheel gear and axle.

FIG. 3 is a sectional view of both halves of the encasement, showing thestructural supports of the gears, the relationship of the gears to eachother and to the encasement, and the dividing plate and its position inthe encasement.

FIG. 4 is a plane view of the other half of the encasement, showing thestructural supports, axle, and the spur gear engaged in the modifiedrack gear.

FIG. 5 is a front view of the dividing plate.

FIG. 6 is a side view of the dividing plate.

FIG. 7 is a sectional view of the modified rack gear in the engagedposition, and a front view of the locking bar, which is in the up"position; this allows the rack gear to be pulled out.

FIG. 8 is a sectional view of the modified rack gear in the engagedposition, and a front view of the locking bar, which is in the down"position; this prevents the rack gear and the spur gear fromdisengaging.

FIG. 9 is a front view showing the modified rack gear disengaged fromthe spur gear.

FIG. 10 is a front view showing the modified rack gear and the spur gearat the automatic stop" position.

FIG. 11 is a perspective view of a refillable chamber, and chamber capand spout assembly.

FIG. 12 is a perspective view of a rod rack gear.

FIG. 13 is a sectional view of the modified rack gear in the disengagedposition, and a front view of the spring lock, which is in thedisengaged position; this allows the rack gear to be pulled out.

FIG. 14 is a sectional view of the modified rack gear in the engagedposition, and a front view of the spring lock, which is in the engagedposition; this prevents the rack gear and the spur gear fromdisengaging.

With more detailed reference to the drawing, wherein like referencecharacters denote corresponding parts, the numerals 1 and 2 designatethe encasement which can be produced by die casting or other suchprocess from a strong material such as zinc or aluminum alloy. Themodified rack gear 13, and the rod rack gear 21, the worm gear 6. theaxle 22, the wheel gear 17, and the spur gear I6are made from a strongmaterial such as steel, and may be produced by machining or otherprocess. The locking bar 4, securing bar 5. and rack disk 15 may be madeout of-a material such as steel, and may be produced by a process suchas stamping. The cartridge chamber 8, the chamber 20, and the chambercap and spout assembly 19 may also be made from a material such as steeland may also be produced by a process such as stamping, and a fasteningprocess such as spot welding. The dividing plate 18 may be produced by aprocess such as stamping or die casting, and may be made from a materialsuch as steel, zinc, or aluminum alloy. The retainer ring 14 may be madefrom a material such as steel, and be produced by a process suchasstamping. The hose clamp 7 may be made out of a material such as steel,and may be produced by a process such as machining and stamping. Thespring lock 23 may be made out of such a material as spring steel.

In order to ready the applicating device such as in FIG. 1, loosenscrews on securing bar 5, and loosen hose clamp 7. Place worm gear 6 inchuck of a portable electric drill and tighten chuck. Place securing bar5 down on top of the drill body. Place the hose clamp 7 around both thebody of the drill and securing bar 5. Tighten the hose clamp 7 and thentighten the screws on securing bar 5. Lift up the locking bar 4; this isnot necessary if spring lock 23 is used, because it is self adjusting;turn handle 3 of rack gear 13 clockwise until it stops, then pull outrack gear 13 until it stops. Place a new cartridge of substance intocartridge chamber 8; turn handle 3 counterclockwise until it stops.Locking bar 4 will automatically fall in the down position thus securingthe'modified rack gear 13 in the engaged position; if spring lock 23 isused instead of locking bar 4, it will also automatically secure themodified rack gear 13in the engaged position. Press the trigger of thedrill, which will activate rack gear 13, thus causing the substance inthe cartridge to flow. Release the trigger of the drill and the flow ofthe substance from the cartridge will stop. When rack disk 15 reachesthe bottom of the cartridge, the

automatic stop 9 prevents the rack gear'l3 from traveling further anddoing damage to the device. When the cartridge is empty, locking bar 4is lifted to the up" position; if spring lock 23 is used, this is notnecessary because it is self adjusting. Tum handle 3 clockwise until itstops; the rack gear 13 is pulled out until it stops. The emptycartridge is lifted out of the chamber 8, and a new cartridge isinserted ready for use.

When the refillable chamber 20, and chamber cap and spout assembly 19 isused, a cartridge is not necessary. This method of operation is similarto the method previously explained except that in order to fill chamber20,.chamber cap and spout assembly 19 is removed and the open end of thechamber 20 is inserted into a container of substance. When rack gear 13is pulled out, it causes the substance to flow into the chamber 20, thusfilling it. When the chamber cap and spout assembly 19 is attached tochamber 20, the device is ready for operation.

When a drill with a forward and reverse direction is used with thisdevice, the rod rack gear 21 can be used. Rod rack gear 21 has no handle3, annular teeth 12, locking bar 4, or flat 11. It does not have to becircular in shape, but can be square or any other shape, so long as therest of the device is adapted to it. It does not need to turn during anypart of the operation; it only goes in and out of the chamber. It doesrequire an additional automatic stop 9 near the rack plate 15 to preventthe plate 15 from causing damage when the drill is in the reverseposition. The operation of the device is similar to the two previousoperations except that the manual pulling out of the rack 13 iseliminated.

When the locking spring 23 is used instead of the locking bar 4, thenecessity of lifting the locking bar 4 is eliminated due to the lockingbar's automatically adjusting to the position of the rod rack 21.

While the invention has been described and illustrated in some detail onthe forms shown, it is to be understood that changes may be made inminor details of the construction, without departing from the spirit ofthe appended claims.

What is claimed and desired to be secured by Letters Patent 1. Anapplicating device comprising an encasement; a drive source mounted tosaid encasement; a storage chamber, secured to said encasement,enclosing a disposable cylindrical cartridge, containing a highviscosity fluid for application, having a dispensing opening at one endand a removable cap at the other end; a means of changing angular motionto linear motion consisting of a modified rack gear which travelslinearly through said encasement and said storage chamber forcing saidhigh viscosity fluid out said dispensing opening; a spur gear whichdrives said modified rack gear; a gear train structurally supported insaid encasement with gear-means to perpendicularly couple and reduce theangular motion of said drive source to the angular motion of said spurgear; and a dividing plate in said encasement for isolating lubricatedhigh speed gears in said gear train from nonlubricated low speed gearsin said gear train.

2. An applicating device as set forth in claim 1, wherein said gearmeans consists of a worm gear coupled to said drive source and axiallyfixed in said encasement; a wheel gear driven by said worm gear, securedto an axle which is axially supported in said encasement, facilitating aperpendicular coupling and reduction of angular motion of said drivesource to the angular motion of said spur gear which is mounted on saidaxle.

3. An applicating device as set forth in claim 1, in which said modifiedrack gear is comprised of a round bodied rod having a set of matingteeth corresponding to the teeth of said spur gear; a flat which is thefull length of said modified rack gear perpendicular to and at the samedepth as the roots of said set of mating in said modified rack gear; aset of annular teeth whose roots are tangent to said roots of said setof mating teeth and tangent to said flat and whose faces are contiguousto the faces of said set of mating teeth and whose crests are contiguousto the crests of said set of mating teeth; a handle at the end of saidmodified rack gear which is a short end piece of said modified rack gearbent at an angle to facilitate angular turning of said modified rackgear and subsequent disengagement of said modified rack gear from saidspur gear; a disk fixed to said modified rack gear at the end oppositeof said handle adapted to force said high viscosity fluid out saiddispensing opening of said storage chamber upon actuation of saidmodified rack gear by said drive source through said gear train; anautomatic stop on said modified rack gear, at the opposite end of saiddisk, which is a number of said set of mating and said set of annularteeth that have been removed to the depth of said roots of said set ofmating teeth and said roots of said set of annular teeth and wouldengage the teeth of said modified rack gear; and a keeper mounted tosaid encasement for biasing said modified rack gear to engage with saidspur gear.

4. An applicating device as set forth in claim 1 wherein said modifiedrack gear is comprised of a rod, having a set of mating teethcorresponding to the teeth of said spur gear; an automatic stop at bothends of said modified rack gear which is a number of said set of matingteeth that have been removed to the depth of the roots of said set ofmating teeth and would engage the teeth of said spur gear at thatsection of said modified rack gear; and a disk fixed to the end of saidmodified rack gear adapted to force said high viscosity fluid out saiddispensing opening of said storage chamber upon actuation of saidmodified rack gear by said drive source through said gear train.

5. An applicating device as set forth in claim 1, wherein said drivesource is detachably mounted to said encasement.

6. An applicating device as set forth in claim 5', wherein said drivesource is detachably mounted to said encasement with a securing bar bentat a 90 angle with a slot in which it is adjusted and fixed to saidencasement; and a securing clamp with which said bar is secured to saiddrive source.

7. An applicating device comprising an encasement; a drive sourcemounted to said encasement; a c lindrical storage chamber, containing ahigh viscosity flui for application,

secured at one end to said encasement, and having a removable cap withdispensing opening at the other end; a means of changing angular motionto linear motion consisting of a modified rack gear which travelslinearly through said encasement and said storage chamber forcing saidhigh viscosity fluid out said dispensing opening; a spur gear whichdrives said modified rack gear; a gear train structurally supported insaid encasement with gear means to perpendicularly couple and reduce theangular motion of said drive source to the angular motion of said spurgear; and a dividing plate in said encasement for isolating lubricatedhigh speed gears in said gear train from nonlubricated low speed gearsin said gear train.

8. An applicating device as set forth in claim 7 wherein said gear meansconsists of a worm gear coupled to said drive source and axially fixedin said encasement; a wheel gear driven by said worm gear, secured to anaxle which is axially supported in said encasement, facilitating aperpendicular coupling and reduction of angular motion of said drivesource to the angular motion of said spur gear which is mounted on saidaxle.

9. An applicating device as set forth in claim 7 in which said modifiedrack gear is comprised of a round bodied rod having a set of matingteeth corresponding to the teeth of said spur gear; a flat which is thefull length of said modified rack gear perpendicular to and at the samedepth as the roots of said set of mating teeth in said modified rackgear; a set of annular teeth whose roots are tangent to said roots ofsaid set of mating teeth and tangent to said flat and whose faces arecontiguous to the faces of said set of mating teeth and whose crests arecontiguous to the crests of said set of mating teeth; a handle at theend of said modified rack gear which is a short end piece of saidmodified rack gear bent at an angle to facilitate angular turning ofsaid modified rack gear and subsequent disengagement of said modifiedrack gear from said spur gear; a disk fixed to said modified rack gearat the end opposite said handle adapted to force said high viscosityfluid out said dispensing opening of said storage chamber upon actuationof said modified rack gear by said drive source through said gear train;an automatic stop on said modified rack gear, at the opposite end ofsaid disk, which is a number of said set of mating teeth and said set ofannular teeth that have been removed to the depth of said roots of saidset of mating teeth and said roots of said set of annular teeth andwould engage the teeth of said spur gear at that section of saidmodified rack gear; and a keeper mounted to said encasement for biasingsaid modified rack gear to engage with said spur gear.

10. An applicating device as set forth in claim 7 wherein said modifiedrack gear is comprised of a rod, having a set of mating teethcorresponding to the teeth of said spur gear; an automatic stop at bothends of said modified rack gear which is a number of said set of matingteeth that have been removed to the depth of the roots of said set ofmating teeth and would engage the teeth of said spur gear at thatsection of said modified rack gear; and a disk fixed to the end of saidmodified rack gear adapted to force said high viscosity fluid out saiddispensing opening of said storage chamber upon actuation of saidmodified rack gear by said drive source through said gear train.

11. An applicating device as set forth in claim 7, wherein said drivesource is detachably mounted to said encasement.

12. An applicating device as set forth in claim 9, wherein said drivesource is detachably mounted to said encasement with a securing bar bentat a angle with a slot in which it is adjusted and fixed to saidencasement; and a securing clamp with which said bar is secured to saiddrive source.

1. An applicating device comprising an encasement; a drive sourcemounted to said encasement; a storage chamber, secured to saidencasement, enclosing a disposable cylindrical cartridge, containing ahigh viscosity fluid for application, having a dispensing opening at oneend and a removable cap at the other end; a means of changing angularmotion to linear motion consisting of a modified rack gear which travelslinearly through said encasement and said storage chamber forcing saidhigh viscosity fluid out said dispensing opening; a spur gear whichdrives said modified rack gear; a gear train structurally supported insaid encasement with gear means to perpendicularly couple and reduce theangular motion of said drive source to the angular motion of said spurgear; and a dividing plate in said encasement for isolating lubricatedhigh speed gears in said gear train from nonlubricated low speed gearsin said gear train.
 2. An applicating device as set forth in claim 1,wherein said gear means consists of a worm gear coupled to said drivesource and axially fixed in said encasement; a wheel gear driven by saidworm gear, secured to an axle which is axially supported in saidencasement, facilitating a perpendicular coupling and reduction ofangular motion of said drive source to the angular motion of said spurgear which is mounted on said axle.
 3. An applicating device as setforth in claim 1, in which said modified rack gear is comprised of around bodied rod having a set of mating teeth corresponding to the teethof said spur gear; a flat which is the full length of said modified rackgear perpendicular to and at the same depth as the roots of said set ofmating in said modified rack gear; a set of annular teeth whose rootsare tangent to said roots of said set of mating teeth and tangent tosaid flat and whose faces are contiguous to the faces of said set ofmating teeth and whose crests are contiguous to the crests of said setof mating teeth; a handle at the end of said modified rack gear which isa short end piece of said modified rack gear bent at an anglE tofacilitate angular turning of said modified rack gear and subsequentdisengagement of said modified rack gear from said spur gear; a diskfixed to said modified rack gear at the end opposite of said handleadapted to force said high viscosity fluid out said dispensing openingof said storage chamber upon actuation of said modified rack gear bysaid drive source through said gear train; an automatic stop on saidmodified rack gear, at the opposite end of said disk, which is a numberof said set of mating and said set of annular teeth that have beenremoved to the depth of said roots of said set of mating teeth and saidroots of said set of annular teeth and would engage the teeth of saidmodified rack gear; and a keeper mounted to said encasement for biasingsaid modified rack gear to engage with said spur gear.
 4. An applicatingdevice as set forth in claim 1 wherein said modified rack gear iscomprised of a rod, having a set of mating teeth corresponding to theteeth of said spur gear; an automatic stop at both ends of said modifiedrack gear which is a number of said set of mating teeth that have beenremoved to the depth of the roots of said set of mating teeth and wouldengage the teeth of said spur gear at that section of said modified rackgear; and a disk fixed to the end of said modified rack gear adapted toforce said high viscosity fluid out said dispensing opening of saidstorage chamber upon actuation of said modified rack gear by said drivesource through said gear train.
 5. An applicating device as set forth inclaim 1, wherein said drive source is detachably mounted to saidencasement.
 6. An applicating device as set forth in claim 5, whereinsaid drive source is detachably mounted to said encasement with asecuring bar bent at a 90* angle with a slot in which it is adjusted andfixed to said encasement; and a securing clamp with which said bar issecured to said drive source.
 7. An applicating device comprising anencasement; a drive source mounted to said encasement; a cylindricalstorage chamber, containing a high viscosity fluid for application,secured at one end to said encasement, and having a removable cap withdispensing opening at the other end; a means of changing angular motionto linear motion consisting of a modified rack gear which travelslinearly through said encasement and said storage chamber forcing saidhigh viscosity fluid out said dispensing opening; a spur gear whichdrives said modified rack gear; a gear train structurally supported insaid encasement with gear means to perpendicularly couple and reduce theangular motion of said drive source to the angular motion of said spurgear; and a dividing plate in said encasement for isolating lubricatedhigh speed gears in said gear train from nonlubricated low speed gearsin said gear train.
 8. An applicating device as set forth in claim 7wherein said gear means consists of a worm gear coupled to said drivesource and axially fixed in said encasement; a wheel gear driven by saidworm gear, secured to an axle which is axially supported in saidencasement, facilitating a perpendicular coupling and reduction ofangular motion of said drive source to the angular motion of said spurgear which is mounted on said axle.
 9. An applicating device as setforth in claim 7 in which said modified rack gear is comprised of around bodied rod having a set of mating teeth corresponding to the teethof said spur gear; a flat which is the full length of said modified rackgear perpendicular to and at the same depth as the roots of said set ofmating teeth in said modified rack gear; a set of annular teeth whoseroots are tangent to said roots of said set of mating teeth and tangentto said flat and whose faces are contiguous to the faces of said set ofmating teeth and whose crests are contiguous to the crests of said setof mating teeth; a handle at the end of said modified rack gear which isa short end piece of said modified rack gear bent at an anglE tofacilitate angular turning of said modified rack gear and subsequentdisengagement of said modified rack gear from said spur gear; a diskfixed to said modified rack gear at the end opposite said handle adaptedto force said high viscosity fluid out said dispensing opening of saidstorage chamber upon actuation of said modified rack gear by said drivesource through said gear train; an automatic stop on said modified rackgear, at the opposite end of said disk, which is a number of said set ofmating teeth and said set of annular teeth that have been removed to thedepth of said roots of said set of mating teeth and said roots of saidset of annular teeth and would engage the teeth of said spur gear atthat section of said modified rack gear; and a keeper mounted to saidencasement for biasing said modified rack gear to engage with said spurgear.
 10. An applicating device as set forth in claim 7 wherein saidmodified rack gear is comprised of a rod, having a set of mating teethcorresponding to the teeth of said spur gear; an automatic stop at bothends of said modified rack gear which is a number of said set of matingteeth that have been removed to the depth of the roots of said set ofmating teeth and would engage the teeth of said spur gear at thatsection of said modified rack gear; and a disk fixed to the end of saidmodified rack gear adapted to force said high viscosity fluid out saiddispensing opening of said storage chamber upon actuation of saidmodified rack gear by said drive source through said gear train.
 11. Anapplicating device as set forth in claim 7, wherein said drive source isdetachably mounted to said encasement.
 12. An applicating device as setforth in claim 9, wherein said drive source is detachably mounted tosaid encasement with a securing bar bent at a 90* angle with a slot inwhich it is adjusted and fixed to said encasement; and a securing clampwith which said bar is secured to said drive source.